Steam-boiler furnace.



F. WAGNER.' STEAM BOILEB. EURNAGE.

- A APPLIOATION FILED JUNE 7, 1909.

937 898. 1 'Patented oct. 26, 1909. v 2 SHEETS-SHEET 1.

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P. WAGNER.

STEAM BOILER PUBNAOE.

UNITED STATES PATENT OFFICE.

FRANK WAGNER, OF NEWPORT, KENTUCKY, ASSIGNOR OF ONE-THIRD TO JOSEPH M.BETZ AND ONE-THIRD TO FRANK F. HAMMER, F NEWPORT, KENTUCKY.

STEAM-BOILER. FURNACE.

To all whom it may concern:

'Be it known that I, FRANK VAGNER, a citizen of the United States,residing at Newport., in the county of Campbell and State of Kentucky,have invented certain new and useful Improvements in Steam- BoilerFurnaces, of which the following is a specification.

invention relates more particularly to a natural gas furnace equipmentfor a boiler which is adapted to be heated by coal.

The object of my invention is to provide means whereby a boiler whichhas been adapted to the use of coal can very easily and quickly beconverted into a boiler using natural gas as means of heating it.

My invention consists of a separate lire box built or placed directlyabove the grating upon which the coal has been placed, and it is thisparticular fire box that I wish to describe specifically.

My invention also consists in certain new I and useful combination ofparts which will be more particularly described in the followingspecification and pointed out in the appended claim.

In the drawings: Figure l shows a cross sectional elevation of a commonordinary type boiler, the top being broken away. Fig. 2 is a sectionalview taken on the line 2 2 of Fig. 1.v Fig. 3 shows a front elevation ofthe boiler. Fig. 4 shows a plan sectional view of my new improved firebox.

Referring more particularly to the drawings, I show at 5 the front wallon the boiler, the back wall 6 and the floor 7. In the front wall 5 Ishow a fire door leading to the re box closed up with brick 8 with theexception of a small opening through which a pipe 9 extends. At 10 Ishow the common type of door leading to the ash pit, this door having adraft opening 11 adapted to be closed or opened as far as desired. At 12I showv the common type water tank, or mud drum, with a series of pipes13 leading therefrom. The common bridge wall found in all boilers ofthis kind I show at 14, having the grate bars 15 resting thereon. Thegrate bars 15 extend from the bridge wall over to the front walls 5. Itis seen that in my new improved re box, I provide a floor 16 which islaid directly upon the grate bars 15. My fire box, in this case,consists of three separate compartments 17, 18 and 19. Each compartmentis directly behind a pipe 9, the

Specification of Letters Patent.-

Application filed June 7, 1909.

Patented Oct. 26, 1909.

Serial No. 500,632.

three pipes 9, 9, 9 being more clearly shown in Fig. Directly behind thepipe 9 I leave a small openino' 2() in the floor 16. The purpose of thishole will be more thoroughly described hereinafter. 23 shows the archbuilt of brick which is usually found in this style of boilers when`using coal as a fuel. This, however, is not necessary with my style firebo-x, as it is readily seen that my fire box can be built beneath thearch 23.

The operation of the system is as follows: I/Vhen the gas coming frompipe 24 is fed through pipe 25 to pipe 9 it immediately begins to mixwith the proper amount of air, which, of course, is necessary before thegas will burn. The gas, upon leaving the pipe 9, also mixes with airwhich enters through opening 20 and as it passes backward it is seenthat the column 21 tends to divide the volume of gas and air, therebymixing it considerably and distributing the volume more thoroughlythroughout the divisions 17, 18 and 19 of my lire box. As the volume ofgas and air passes farther backward it comes in contact with a net workof what is commonly called checker work 26 built upon the bridge wall14. This wall of checker work is here to perform several functions, oneof which is to more thoroughly mix the gas and more evenly distribute itthrough the pipes 13. The wall 26 will also retain a great amount ofheat, thereby keeping the lower end of the pipes 13 hot. As the heatpasses through the checker work 26 and into the pipes 13 ,it takes itsusual course to the top of pipes 13 and down the other series of pipesand out of the flue which is commonly provided in these type boilers.

It is seen that by providing a roof or cover 27 to each division 17, 18and 19 of my fire box that I keep the heat and gas from collecting underthe arch 23 which, as stated before, is used when coal is in use as afuel. I also extend the roof or cover 27 parallel with the grate bars 15which are slightly lower at their inner ends, thus making the cover 27lower also. In this manner I keep the heat down as much as possible,which has been found very desirable in this style of equipment. Ofcourse, it is not necessary to have three divisions in this style firebox but I have shown three because this number is very commonly used.

Referring more particularly to Fig. 4 of the drawings, where I show mynew improved iire box on a slightly larger scale and in plan, I alsoshow the side walls 28 which may or may not be used. By using walls 28it is seen that I make the ire boX complete in itself, vand all there isneeded to be done is to place the re box directly upon the grate bars ofthe old ire box. In Fig. t I also show the partitions 17a which dividethe fire box into the three divisions 17, 1S and 19. I also show thecover more plainly and in plan, said cover being broken`away for thesake of clearness. The checker work 26 is shown built upon bridge wall14. The opening 20 is also shown directly behind the pipe 9 and in frontof the brick column 21. Vhen it is desired to regulate the amount of airwhich comes through the opening 20, I provide the opening l1 or shutteras it might be called'in the door l0. This shutter may be arranged toopen and close as much as desired. V

My invention may be modified in various ways without departing from itsspirit and. scope, and I do not wish to be coniined to the exact detailsshown. Y

What I claim as new and desire to secure by Letters Patent is:

In a steam boiler furnace adapted to use gas as fuel, having fire brickfloor and walls and divided by vertical walls making a series ofcombustion or iire chambers, each chamber having a vertical columnplaced behind an air opening in the floor, said vert-ical columnsdividing the combustion particles in such a manner as to cause them tospread throughout the fire chamber, and a brick wall built with suitableopenings for equalizing and retaining heat and placed behind said firechambers.

FRANK WAGNER. lVitnesses JAMES N. RAMSEY, FLORENCE HAMMEL.

